Robert F. Wimmer-Schweingruber , Jia Yu , Stephan I. Böttcher , Shenyi Zhang , Sönke Burmeister , Henning Lohf , Jingnan Guo , Zigong Xu , Björn Schuster , Lars Seimetz , Johan L. Freiherr von Forstner , Ali Ravanbakhsh , Violetta Knierim , Stefan Kolbe , Hauke Woyciechowsky , Shrinivasrao R. Kulkarni , Bin Yuan , Guohong Shen , Chunqing Wang , Zheng Chang , Thomas Berger , Christine E. Hellweg , Daniel Matthiä , Donghui Hou , Alke Knappmann , Charlotte Büschel , Xufeng Hou , Baoguo Ren , Qiang Fu
29 January 2020
Chang'E 4 is the first mission to the far side of the Moon and consists of a lander, a rover, and a relay spacecraft. Lander and rover were launched at 18:23 UTC on December 7, 2018 and landed in the von K\'arm\'an crater at 02:26 UTC on January 3, 2019. Here we describe the Lunar Lander Neutron \& Dosimetry experiment (LND) which is part of the Chang'E 4 Lander scientific payload. Its chief scientific goal is to obtain first active dosimetric measurements on the surface of the Moon. LND also provides observations of fast neutrons which are a result of the interaction of high-energy particle radiation with the lunar regolith and of their thermalized counterpart, thermal neutrons, which are a sensitive indicator of subsurface water content.